Changing the BIRT report viewer location
To place the BIRT report viewer in a location other than $TOMCAT_INSTALL/webapps, add a context mapping entry to the server.xml file in $TOMCAT_INSTALL/conf.
To add a context mapping entry, add the following line to server.xml just above the </host> tag near the end of the file:
<Context path="/birt_context" docBase="BIRT_Path"/>
where birt_context is the context root for the BIRT report viewer application and BIRT_Path is the absolute path to the directory containing the BIRT report viewer.
Save the changes to server.xml and restart Apache Tomcat to make the changes active.